Improvement in dumping-platforms



W. W. HENMAN.

Dumping-Piatforms.

N0,138,400. Patented Aprii 29. 1873 AM. PHOTO-LITIIOGMPH/C ca w (omms1*)?005531 UNITED STATES PATENT OFFICE.

WILLIAM W. HINMAN, OF ELKHART, ILLINOIS, ASSIGNOR OF PART INTER- EST TOSAMUEL B. HUNTER AND JOHN GIBBS, OF SAME PLACE.

IMPROVEMENT IN DUMPING-PLATFORMS.

Specification forming part of Letters Patent No. 138,400, dated April29, 1873; application filed March 21, 1873.

To all whom it may concern:

Be it known that I, WILLIAM W. HINMAN, of Elkhart,.in the county ofLogan and in the State of Illinois, have invented certain new and usefulImprovements in Dumping-Platform; and do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawing and to the letters of referencemarked thereon making apart of this specification.

The nature of my invention consists in the construction and arrangementof a dumpingplatform, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referrin g to the annexed drawing, in which-Figure 1 is a side elevation, Fig. 2 a plan view, and Fig. 3 atransversevertical section of my invention.

A represents a platform with trap-door B, through which the grain orcorn is to be emptied. Under the platform and in suitable bearings isplaced a shaft or roller, (l, provided at one end with a spoke-wheel, D,part of which projects up through an opening in the platform. The shaft0 is by cords or chains a aeonnected with the lower ends of two bars, EE, which move in cases G G placed vertically or slightly inclined fromthe platform A downward, the upper ends of said cases passing throughopenings made for that purpose in the platform, and are flush with theupper surface thereof. 0n the upper ends of the sliding bars E E issecured a cross-bar, H, which rests upon the platform A when the slidingbars are pushed down.

The wagon is backed up with the rear end over the trap-door B, and thehind wheels locked by chains b b which are attached to the platform. Bynow turning the wheel D the bars or columns E E with top cross-bar Hrise and raise the front end of the wagon so as to dump the load fromthe rear end through the trap-door, which is held open by a hook, d.Inside of the cases G G friction-rollers may be arranged for the bars EE to bear against in their up and down movement. By reversing the wheelD the weight of the wagon forces the columns down again.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

The combination, with a platform, A, having trap-door B, of the cases GG, sliding bars E E with cross-bar H, cords or chains 00 a,

shaft 0, and wheel D, all constructed and arranged substantially as andfor the purposes herein set forth.

In testimony that I claim the foregoing I have hereunto set my hand this5th day of March, 1873. I

' WILLIAM W. HINMAN. Witnesses:

J. J. HAAS,

M. E. GRISWOLD.

